Hey,
To choose "Kata" on the left side of the site. Search for the kata you want to solve. Then click on the kata. This will open a page with the problem statement. Beside the name of there is an option called "Train". That is the option for solving the kata. Hope that helped. Cheers!

I like the dark theme it is easier on the eyes, it does take a while to get used to all language IDE's have started doing this, give it time and you will like it better it is easier to read and write, dont know why noe has ever whent for the pale yellow look maybe it may be ugly i dont know, but I do know we used pale yellow paper in school for easy eye visibility

it's not more readable because this expression is too simple for programmers.

I wrote same to this.dest the sortStr is better than mine.

Both should be possible!

I want the light theme...

I search a kata but i cant find the button to slove it.

I absolutely agree!

but that's more beautiful

suprise to me